<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>p9_元素的阴影</title>
  <style>
    div{
      width: 300px;
      height: 100px;
      background-color: #62b5ec;
      border-radius: 50px;
    /*div阴影 box——shadow:1px 2px 3px 4px  */
    /*                    x轴 y轴  羽化值*/
    }
  </style>
</head>
<body>
<div></div>
</body>
</html>